Narrow Band-Pass Filters for Low Frequency Applications

Evaluation of Eight Electronics Filter Design Topologies

af Raman K Attri

Narrow Band-pass filtering techniques have been a challenging task since the inception of audio and telecommunication applications. The challenge involves keeping quality factor, gain and mid-frequency of the filter independent of each other. The critical applications require a design that ensures mid-frequency immune to the circuit component tolerances. It becomes increasingly difficult for low-frequency applications where the shift in few Hz in mid-frequency would cause desired frequencies to ... (Læs mere)